SDR EPUA20140911001

Service difficulty report · Valve · Piper PA31350

Difficulty date: September 11, 2014
Submitted: September 17, 2014
Operation: Air carrier
Aircraft: N44AC
Make and model: Piper PA31350
Aircraft serial: 318052147
Aircraft time: 16,229 hours
Engine: Lyc TIO540J2BD
Engine time: 402 hours
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Valve
Part number: 73938
Condition: Failed
Location: Nr 1 Cylinder
Part time: 402 hours
Stage of operation: CR
How discovered: O
Nature of condition: R, F
Precautionary procedure: E, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING FLIGHT, THE LT ENGINE BEGAN TO HAVE PROBLEMS, THE PILOT SHUTDOWN THE ENGINE & SECURED FOR OPERATION ON SINGLE ENGINE. ACFT LANDED UNEVENTFULLY. ON INVESTIGATION, DETERMINED THAT THE NR 1 CYLINDER INTAKE VALVE BROKE AND PUT A HOLE IN THE NR 1 CYLINDER PISTON.

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